GB/T 8731

GB/T 8731 (Free-cutting structural steels)· GB (中国) · 57 种材料

名称	材料组别
L20087	结构钢	chevron_right
L20157	结构钢	chevron_right
L20407	结构钢	chevron_right
L20457	结构钢	chevron_right
L27457	结构钢	chevron_right
U71002	结构钢	chevron_right
U71082	结构钢	chevron_right
U71121	结构钢	chevron_right
U71152	结构钢	chevron_right
U71153	结构钢	chevron_right
U71201	结构钢	chevron_right
U71301	结构钢	chevron_right
U71351	结构钢	chevron_right
U71353	结构钢	chevron_right
U71452	结构钢	chevron_right
U71453	结构钢	chevron_right
U71454	结构钢	chevron_right
U71501	结构钢	chevron_right
U72081	结构钢	chevron_right
U72121	结构钢	chevron_right
U72151	结构钢	chevron_right
U73451	结构钢	chevron_right
U74082	结构钢	chevron_right
U74151	结构钢	chevron_right
U74451	结构钢	chevron_right
U75084	结构钢	chevron_right
Y08	结构钢	chevron_right
Y08MnBi	结构钢	chevron_right
Y08MnS	结构钢	chevron_right
Y08Pb	结构钢	chevron_right
Y08S	结构钢	chevron_right
Y08Sn	结构钢	chevron_right
Y100S	结构钢	chevron_right
Y12	结构钢	chevron_right
Y12Pb	结构钢	chevron_right
Y15	结构钢	chevron_right
Y15Mn	结构钢	chevron_right
Y15MnS	结构钢	chevron_right
Y15Pb	结构钢	chevron_right
Y15S	结构钢	chevron_right
Y15Sn	结构钢	chevron_right
Y20	结构钢	chevron_right
Y30	结构钢	chevron_right
Y35	结构钢	chevron_right
Y35Mn	结构钢	chevron_right
Y40Mn	结构钢	chevron_right
Y40MnS	结构钢	chevron_right
Y45	结构钢	chevron_right
Y45Ca	结构钢	chevron_right
Y45Mn	结构钢	chevron_right
Y45MnPb	结构钢	chevron_right
Y45MnS	结构钢	chevron_right
Y45MnSn	结构钢	chevron_right
Y45MnSPb	结构钢	chevron_right
Y45S	结构钢	chevron_right
Y45Sn	结构钢	chevron_right
Y50	结构钢	chevron_right